Conveyer.



No. 690,5l8. Patented 1an. 7, |902.

A y A. J. Fnmi.

GUNVEYER. (Applicatioi led July 6, 1901.)

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No. 690,518. A Patented lan. 7, |902.

A.'J. FRITH.

CONVEYEB.

(Application led July, 1901.)

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f f Patented lan. 7', |902. A. J. FBITH.

CONVEYEB.

(Applicationled Jul'y 8, 1901.)

No. 690,518. l

(No Model.)

WVM/Leases No. 690,518. Patented 1an. 7,1902.

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GUNVEYEB.

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5 is a sectional elevation of one of my spiral veycr w-hich feeds therotary loader.

one of my rotary loaders and its feeding-con- UNITRD STATES ARTHUR J.FRiTI-I, o

PATENT FFICE.

'F NEW YORK, N. Y.

. ONV'EYER.

SPECIFICATION forming part of Letters Patent No. 690,518, dated January7, 1902.

Application filed July B, 1901. Serial No. 67,267. (No model.)

To alt whom, it may concern-.-

Be it known that I, ARTHUR J. FRITH, of the borough of Manhattan,in thecity,county, and State of New York, have invented certain newvand usefulImprovements in Conveyers, which invention is fully set forth andillustrated in the following specification and accompanying drawings.

The object of this invention is to provide simple and efficient meansfor loading conveyers having buckets so that each bucket in turn may beloaded with the coal, ashes, or other material' to be conveyed withoutspilling such material between the buckets.

Itis also its object to provide means for conveying material to theloading devices and for disposing of the material discharged by thebuckets, thus enabling material to be loaded into the buckets from adistant point and when discharged to be spread over a large surfacearea; and it is also its object to so construct the conveyer that it maybe employed for conveying two or more dierent materials simultaneouslyin alternate buckets, which materials can be discharged at anappropriate point or points.

The invention will first be described in detail and then set forth inthe claims.

In the accompanying drawings, Figure 1 is a view in side elevation,partly in section, of a conveyer embodying certain of my improvements.Two loading devices are shown for loading alternate buckets withmaterial conveyed to such loaders by screw conveyers from twostorage-bins, and two discharging devices are shown for receiving thematerial to desired points. Fig. 2 is an end elevation of Fig. 1, partlyin section. Fig. 3 shows in sectional elevation, upon an enlarged scale,

veyer mounted in supporting-frames. Fig. 4 shows one of'said rotaryloaders in perspective, the supporting-frames and certain other .detailsbeing omitted in order to more clearly illustrate the remaining parts.Fig.

loaders, illustrating a detail of construction hereinafter described.Fig. 6 is a View in sectional elevation, showing means for increasingthe speed of the feeding screw con- Fig. 7

is a view in sectional elevation, detached, of the receiving screwconveyer which is shown at the right of Fig. 1 as receiving materialdischarged from the buckets. Fig. 8`is a sectional side elevation, uponan enlarged scale, of a portion of a conveyer in which two of my rotaryspiral loaders are shown as being fed with material by hoppers andchutes instead of by screw conveyers, as in Figs. 1, 2, and 3. Fig. 9 isan end elevation of Fig. 8 looking to the left. Figs. 10 and 11 showinelevation and in section, respectively, a modified form of my spiralloader. Fig. 12 is a view in perspective,showingthe spiral loadermountedso as to be movable to different places. Figs. 13 and 14 illustrate insectional elevation and end elevation,respectively, a method of throwingthe loading device into and out of gear with the conveyer-chain. Fig. 15is a viewin side elevation, partly in section, of a conveying apparatusembodying my improvements applied to a boiler plant for the doublepurpose of supplying coal to the furnaces and conveying ashes therefrom,two of my improved spiral loaders being shown in position.

In said figures my invention is shown as applied to a gravity bucketconveyer, although my invention is applicable to other forms ofconveyer.

The letterJ indicates two parallel conveyerchains, which are arranged inthe usual manner to form endless flexible connections between thebuckets M M' M2 M3. Each bucket is suspended between the chains .I bymeans of an axle or pivot m, provided on its ends with track Wheels orrollers N, which run upon track-rails Y, suitably supported in theframework of the conveyer.

The conveyer may be driven by any suitable mechanism located at thepoint D, Fig. 1, or any other convenient point.

The letter c indicates vertical timbers forming part of theconveyer-frame and connected together by cross-pieces d. Mounted in saidcross-pieces by means of pivots f is a series of small rollers c. Fouror any other desired number of said rollers may be provided at each sideof the'conveyer vto form bearings for the hollow necks H of my rotaryloadingchute. Said loading-chute is constructed, as

clearly shown at the left of Fig. l and in Figs. 4 and 8, from a singleplate or sheet of metalu .storage binsl or pockets B'.

K by rolling or bending the sheet upon itself to form a spiral casing orspiral chute with a single discharge-opening. When form edinto theproper shape, said spiral chute is secured, by means of angle-bars Z,Fig. S, to two side pieces G, each provided with teeth or projeclions gfor engaging the links of the conveyerchain J. The side pieces G areeach pro` vided with an opening I and with a hollow neck H, by means ofwhich necks the loader is supported upon the rollers e, as abovedescribed. Said necks H also serve the purpose of enabling material tobe deposited in the loader, and if, as shown in Figs. 2 and 9, a hollowneck H be provided at each side material may be deposited in the loaderand loaded into the buckets from either side of the conveyer, a methodof loading which is very advantageous under some circumstances and whichcannot be adopted with rotary loaders supported upon a side shaft. It isevident, however, that one of the necks H may be closed, ifdesired, andmaterial be deposited in the loader from one side only.

For the purpose of delivering into the rotary loader the material to beconveyed I have shown in Figs. 8 and 9 two side chutes or spouts B,leading from hoppers A and entering the hollow necks H of the loader,the

material being placed in said hoppers by hand or by other suitablemeans.

`In Figs. 1, 2, 3, and 4l have illustrated an,- other method ofdelivering material into the loader, which method will be found veryadvantageous in many cases. In said igures a gravity bucket conveyer isshown having two rotary loaders, the buckets being so spaced apart andthe loaders being so proportioned that each loader will load analternate bucket of the conveyer with material from Said bins maycontain the same kind of material, or a different material may becontained in e'ach bin. The bottom of each bin B is provided with adischarge-spout B2, which discharges thematerial into a screw conveyerB5, supported on a shaft B4 within a trough or casing B5, the inner endof the trough B5 being supported by the hollow neck H of the loader andits outer end by a suitable support, as at B8, Fig.

' 2. The outer end of the shaft B1 may be supported, as shown in Fig. 4,in a bearing B7, carried by the trough B5, and the inner end of saidshaft may be rigidly secured to a bar B6, which is secured to the sidepiece G of the loader and extends across the opening I. The screwconveyer B3 being thus rigidly connected with the rotary loader, it isevident that the rotation of the loader will eitectthe rotation ot saidscrew conveyer. To accomplishthe same result and to permit of the loaderand screw conveyer being disconnected, any suitable form of clutch maybe provided between the loader and the screw conveyer,l as indicated atthe point B, Fig. 2. Each of the rotary loaders shown in Figs. l

i andV 2 is shown as provided with a screwA conveyer B5 at each side,and said conveyers may all be provided with clutches B9 for connectingthem with and disconnecting them from the loaders.

As it ymay be necessary in some cases to increase the speed of thefeeding-conveyers B5 in order that suieient material will be fed intothe loader to load the buckets, any suitable means may be provided toaccomplish this result. One method is illustrated'in Fig. 6, where oneside piece G of the loader is shown provided with an internal gear B1",which engages a pinion B11 on a shaft B12. The shaft B12 carries on itsouter end a gearwheel B13, engaging a gear B14 on the outer end of thescrew-conveyer shaft B1, the inner end of said shaft B4 being looselymounted in a suitable bearing in the hollow neck H of the loader. Itwill thus be seen that as the loader K rotates the feeding-con veyer B3will be driven at a greater speed Jthrough the gear B10, pinion B11,gears B13 B14, and shafts B12 B4.

The discharge-opening of the spiral chute K may have secured thereto, ifdesired, as shown 4in Figs. 8 and 9, a metal plate K', which will form aloading channel or spout for guiding the material into the buckets ofthe conveyer. Said chute may also have secured thereto, as shown in Fig.5, a detlector K2 to guide thematerial.

The casing B5 of each feeding-conveyer BEl may be provided, as shown inFig. 4, with a curved guard-plate B15, so that in case a lump ofmaterial should be deposited in the screw conveyer which is too large topass through the opening I into the loader said lump will be thrown outof the screw conveyer over the side of the trough B5 by saidguard-plate.

Guard-rails@ may be secured to the framework c of the conveyer above thebuckets for the purpose of preventing their oscillation duringy theloading operation.

In Fig. l I have shown two rotary loaders for loading the'buckets, theone at the left being a spiral chute formed from a single plate ofmetal, as above described. The loader at the right is also formed from asingle plate of metal, but instead of being bent into spiral form isbent to form a cylindrical casing or chute with a singledischarge-opening. ated in the same manner as the spiral loader.

For the purpose of effecting the discharge and distribution of thematerial conveyed by the buckets I have shown at the top of Fig. lltwodifferent means at different points. At the left of said ligure is showna spiral chute K5, located below the line of travel of the buckets andhaving connected to each of its side openings a screw conveyer B111. Thespiral chute Ka and theY screw conveyers B15 are exactly similar inconstruction and operation to the spiral chute K and screw conveyers B3shown at the loading-point on the lower level ot the conveyer, exceptthat they are caused to rotate in the opposite direction. At the rightot' Fig. l the spiral receivingri IOS IIO

This loader is mounted, fed, and oper- IZO chute K6 is shown asdispensed with; but its side pieces G are retained to effect therotation of a screw conveyer B17, which extends beneath the line oftravel of the buckets, as clearly shown in Fig. 7. Each bucket of theconveyer is provided on one of its sides with a gear @/6, the gears onadjacent buckets being on opposite sides. Above the conveyer and in theline of travel of the buckets are set at different points on oppositesides of the track two dumping-bars @/6, each provided with teeth orprojections adapted to engage the gears p6 on the buckets and by tiltingthe buckets backward upon their pivots cause the material contained inalternate buckets to be discharged into the receiving-chute K6 at theleft and directly into the screw conveyer B16 at the right.

The operation of the parts as shown in Figs. 1, 2, 3, 4, 8, and 9 is asfollows: In Figs. 1, 2, and 8 I have shown, as above described, tworotary loaders applied to a conveyer; but referring first to Fig. 8 andassuming that only one loader be used-say the one at the right of saidfgure-it will be evident that coal or other material deposited in thehoppers A will flow through the chutes B, hollow necks H, and openings Iinto the center of the spiral loading-chute K. As the conveyer travelsthe' conveyer-chain J will engage the teeth g on the sides of theloader, and thus cause the loading-chute K to revolve in the directionof the arrow, the result being Ythat as said chute continues itsrevolution the material deposited in the center thereof willfollow thespiral and be discharged through the discharge-opening into the bucketM, which will be beneath said opening. As said spiral chute continuesits revolution the supply of material to the buckets is thereby cutoffand no material can escape untilthe next bucket has come into properposition beneath the loader. As shown in Fig. 8, the spiral loader isdischarging one load into a bucket and is receiving another load intoits center from the hopper A, which latter load will be delivered at thenext revolution into the next succeeding bucket if the parts be properlyproportioned. The material thus loaded into the buckets is conveyed bythem to the dosired point and there discharged in any wellknown manner.'If instead of feeding material to the loader through the hopper A andchutes B the feeding screw conveyers B3, Figs. 1, 2, 3, and 4, be usedfor this purpose, it is evident that material deposited into said screwconveyers will as the conveyer travels be delivered into the center ofthe loader from each side of the conveyer, the rotation of the loadereffecting the rotation of said feeding-conveyers by the mechanismhereinbefore described. The material is then loaded into the buckets bythe loaderl in the same manner as above described. Assuming now thatinstead of loading each bucket of the conveyer at the same point it bedesired to load the buckets. at different points either with the samematerial or with dierent materials, then I arrange the conveyer as shownin Figs. 1, 2, and 8 by placing two loaders side by side and so spacingthe buckets apart that each of said loaders will load an alternatebucket with material. Thus if the conveyer be traveling in the directionof the arrow, Fig. 8, the bucket M will receive a load of one kind ofmaterial from the loader at the right, while the bucket M (which haspassed the right-hand loader without receiving a load) will receive aload of another kind of material from the loader at the left. The bucketnext following the bucket M will pass the right-hand loader withoutreceiving a load and will be loaded by the loader at the left, and soon, the two loaders being continuously operated by the movement of theconveyer.

In Fig. 1 the two loaders are shown applied to the loading of materialfrom storage bins 'or pockets B', which may contain diiferent materials,if desired. The material flowing through the chutes B2 at the bottoms ofsaid bins falls into the feeding screw conveyers B3 and is automaticallyfed by the rotation of said conveyers into both sides of each loader,and each loader as the conveyer travels loads an alternate bucket withsaid material. The buckets then convey the material or materials to theupper level of the conveyer and are then discharged of their contents bybeing tilted backward upon their pivots when the dumping-gears @/6 comein contact with the Viixed dumping-bars @/6. The contents of one bucketM' will be delivered into the screw conveyer B17 at the right. Thecontents of the following bucket M will be delivered into the singleopening of the rotary spiral chute K3 and by the rotation of said chutebe discharged through its side openings into the attached screwconveyers B16. The screw conveyers B16 B17 will then convey the materialhorizontally and deposit it at the desired points. With this system,therefore, by providing feeding-conveyers at each side of the loaderanddischarging-conveyers at each side of the dumping-point material may befed into the conveyerfrom distant points on each side, and whendischarged may be spread over a large surface area, thus enablingstorage bins or pockets to be constructed comparatively shallow, but ofgreat length or width.

In Fig. 15 I have shown my invention embodied in an endless gravitybucket conveyer and applied to a boiler plant, so that a single conveyerperforms the double function of simultaneously conveying coal to thefurnaces and of discharging ashes therefrom. In this illustration of myinvention I have shown one of my spiral loaders or chutes K receivingcoal from .a car T and loading it into the angular buckets M2 of theconveyer, which convey and deliver it into a hopper T', leading to theboiler-furnaces. At the same time the alternate semicylindrical bucketsM6 of the conveyer are loaded with ashes from a chute IOO T2 beneath thefurnaces by another of my spiral loaders and convey such ashes to areceiving hopper or receptacle T3, into which said buckets discharge. Toeffect the discharge of coal from the angular buckets M2, I have shownsaid buckets provided with cams or projections y on t-heir sides, whichby coming in contact with a cam y', placed at the side of the trackabove the hopper T', tilt said buckets on their pivots and discharge thecoal into said hopper. To effect the discharge of ashes from thesemicylindrical buckets M3, I have shown said buckets provided on theirbottoms with projections y2, which by coming in contact with transverserods qj3,iixed above the receptacle Tieect the tilting of said bucketsM3 and the discharge of the ashes into said receptacle. Bythus providingdifferent dumping devices for alternate buckets each alternate bucketwill be discharged at its appropriate point,asit willbe evident thatihebuckets M2 will pass the dumping device g3 without interference and thatthe buckets M3 will likewise pass the dumping-cam y' withoutinterference. It is obvious that the same effect can be produced byproviding the cams y alternately on opposite sides of the buckets andplacing a cam y on each side of the track at different points. Hence Ido not confine myself to the use of any particular means for effectingthe discharge of the contents of the buckets, as any suitable means maybe employed for this purpose.

By my invention, therefore, if theloading devices and the buckets of aconveyer be properly arranged in relation to each other the loadingdevices will be operated by the conveyer and alternate buckets of asingle conveyer will be loaded with and caused to convey two or moredifferent materials si- .multaneousljg which materials may be dischargedat any desired point or points in the conveyers line of travel. Myinvention also presents the advantage that different kinds of bucketsmay be employed for the different materials to be conveyed. Thus, forexample, the buckets M3 (shown in Fig. l5) for conveying the ashes maybe made of malleable metal, as hot ashes have been found to bedestructive of the usual conveyer-buckets.

In view of the fact that I believe myself to be the first person to loadalternate buckets of a gravity bucket conveyer by a loading device ordevices operated by the conveyer and to discharge such bucketsalternately at any desired point or points in the line of travel of theconveyer I do not in regard to this feature of my invention limit myselfto the particular forms of loading and discharging devices shown, as itis evident that these devices may be modified to accomplish the sameresult without departing from the essence of my invention, and, further,as I believe myself 'to be the first to feed material by means of aconveying device into a bucket-loader which is operated to load thebuckets I do not limit myself to the specific constructions of loadersshown in Fig. 1, as it is evident that the feeding-'conveyers may beused to feed other forms of bucket-loaders than those shown.

The means shown for effecting the operation of the several parts, sothat each will perform its proper function at the proper time, may bevaried without departing from my invention; but in order to insurecertainty in operation I prefer to derive the necessary motion directlyfrom the moving conveyer.

In Figs. 10 and ll I have shown a double spiral chute constructed fromtwo sheets of metal instead of from a single sheet. The two fiat sheetsof metal K5K6are simply rolled or bent upon themselves into the spiralform shown and are secured to two side pieces G G, oneyof which isprovided with the hollow neck I-I for the reception of the chute B andthe other closed and provided with teeth or projections g for engagingthe conveyer-chain; When thus secured together, the device forms adouble chute, each with a single dischargeopening, and may be mountedupon a short shaft h,rotatingin bearings carried byastandard t',supported by the conveyer track-rails or by the conveyer-framework. Itis obvious, however, that this double spiral chute instead of beingsupported by the shaft 71, may be provided with and supported by ahollow neck or necks Il in the same manner as the single spiral chutehereinbefore described. The principle of operation of this double spiralloader is the same as that shown in Figs. l, 8, and 9; but if made thesame size as the loader shown in these figures the buckets in theconveyer will be placed closer together by reason of the loader beingdouble. In Fig. 1l the loader is shown as rotating in the direction ofthe arrow and discharging the material from one of its spirals, whilethe other spiral is receiving a load from the chute B to be dischargedinto the next bucket of the conveyer on the next revolution of theloader.

By referring to Fig. 5 it will be seen that the areav of the spiralpassage in the loader gradually expands toward the discharge-opening,thus facilitating the discharge of material and lessening the chances ofthe material jamming in such opening. In Fig. ll

`the spiral passages in the loader may, if depable of being moved todifferent points in the conveyers line of travel, and to accom- .IOO

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plish this I have shown in Fig. l2 one of my Y vided with a lever orhandle c.

iary rails Y2, mounted uponthe track-rails Y at the loading-point andprovided with inclined ends. The track wheels N of the buckets mountthese short auxiliary rails, and thus bring the conveyer-chain intoposition to engage the teeth g of the loader and elfect the rotation ofthe latter. By this construetion the loader may be thrown out ofoperation at any time that it may be desired to stop loading therefrom,as it is only necessary to remove the short auxiliary rails Y2, and thusthrow the teeth g and conveyer-chain .I out of gear.

In Figs. 13 and 14 I have shown another method Aby which the loader maybe thrown out of operation at any desired time. In this modification Imake one of the teeth g of each side piece G movable Within a recess tformedin said side piece, and secure these teeth to the ends of atransverse rod or shaft u, pro- It will be obvious that by moving thehandle n in one direction or theother the teeth g will be thrown into orout of gear with the conveyerchain, as may be desired. In Figs. 13 and14 (Fig. 13 being a sectional elevation looking from the right of Fig.14) the movable tooth g is shown thrown out of gear with theconveyer-chain, and hence the travel of said chain will not rotate thespiral loader. When it is desired to operate the loader, it is onlynecessary to depress the lever o in the direction of the arrow, Fig. 13,and the movable teeth g (one on each side ofthe conveyer) will h bethrown into gear with the conveyer-chain, as shown in dotted lines, thusresuming the rotation of the loader. A support w may be provided for theshaft u and the tooth g and a stop-pin .fr to limit the movement of thelever n. Care should be taken to throw the movable tooth into Ltheproper link of the chain, so as not to aec't 'the register of theloader, and, it desired, any suitable means may be provided to insurethe proper relation of the parts being attained.

In conveyers in 'which the vbuckets are spaced apart there is aliability of the conveyer-chain slacking or sagging between the buckets,and should this occur at the loading-point the teeth or projection onthe loading device might skip a link in the chain, thus throwing theloader out of register and causing it to deposit material outside of thebuckets, and an accumulation of such material might result in a jam ofthe buckets and other parts and cause serious damage. To vobviate thisdifficulty, I provide on each side of the conveyer at the loading point,as shown in Figs. 3, 8, and 9, two parallel rails or bars S S', securedto the brackets fr, which.

are carried by the conveyer track-rails. The conveyer-chain J rests andtravels upon these bars while passing the loading-point, and said barsform a supporting-guide for the chain and insure its proper contact withthe teeth :g of the loader, which teeth engage the links ofthe chain andenter the channel formed between said bars. This supporting-guide forthe conveyer-chain may be used at any point in the con'veyer where itmay be desirable to hold the chain in position to engage an operatingmechanism.

From the above description it will be apparent that a conveyer embodyingmy improvements presents many advantages. The use of a rotary loadingchute or casing having but a single discharge-opening for loading thebuckets permits the buckets to be spaced very far apart, so that in agiven length of conveyer the expense of buckets is very materiallydecreased and a saving in cost of installation edected. The loadingdevice may be economically manufactured, is of eX- tremely simpleconstruction, has no movable parts to be clogged, broken, or deranged inoperation, and is operated easily and with certainty by the conveyer. Italso acts as a measure for the material to be conveyed, receiving fromthe feeding devices and delivering into the buckets at each revolution ameasured charge of material, preventing overloading of the buckets andthe escape ot material between them. Its construction renders unlikelythe stoppage of the flow of material by jamming; but should a stoppageoccur at the discharge-opening ot' the spiral the loader would not stop,but would continue rotating, and the next load entering from thefeeding-chute B would back np on the previous one that could not escapeand would flow inward over the inner edge ot' the plate 7c to thecentral compartment of the loader and would continue to do so until thestoppage were removed. This inflowing of the extra load would preventfurther feeding from the side chutes B', if said chutes be used to feedthe loader, a feature of my spiral loader which is illustrated in Fig.5, where a stoppage is shown at the discharge-opening of the spiral andthe succeeding load is shown in the position which it would assume. Thusmy spiral loader is adapted to delivera certain load to successivebuckets, and the slightlyexpanding areas in the spiraldischarge-passage, above referred to and shown in Figs. 5 and l1, makeit unlikely that even large masses of material could stop the loading;but even if such stoppage should occur excessive loading of individualbuckets is impossible for the reason just given.

Having thus fullydescribed my invention, I claim- 1. The combination, ina conveyer, of traveling buckets; a bucket-loader; means for operatingsaid loader to load material into the buckets; a conveying device forsupplying material to said loader; and mechanism for driving saidconveying device.

2. The combination, in a conveyer, of traveling buckets; abucket-loader; a conveying device for supplying material to said loader;and means for operating said conveying device by a part of the mainconveyer;

3. rlhe combination in a conveyer of trav- IOO IIO

eling buckets; abucket-loader; means for operating said loaderto loadthe buckets; a conveying device for supplying material to said loader;and means for operating said conveying device by the movement of saidloader.

4. The combination, in aconveyer ot travelingbuckets; abucket-loader;means foroperating said loader to load material into the buckets; ascrew conveyor for supplying material to said loader; and `means foroperating said screw conveyer.

5. The combination, in aconveyer, 0f traveling buckets; a bucket-loader;a screw conveyer for supplying material to said loader; and means foroperating said screw conveye by a part of the main conveyer.

6. The combination, in a conveyer, of traveling buckets; abucket-loader;means for operating said loader to load the buckets; a screw conveyerforsupplying material to said loader; and means for operating said screwconveyer by the movement of said loader.

7. The combination, in a conveyer, ot' traveling buckets; a rotarybucket-loader; means for rotating said loader to load material into thebuckets; a conveying device for supplying material to said loader; andmechanism for driving said conveying device.

8. The combination, in a conveyer, of traveling buckets; a rotarybucket-loader; aconveying device for supplying material to said loader;and means for operating said conveying device by a part of the mainconveyer.

9. The combination, in a conveyer, of traveling buckets; a rotarybucket-loader; a conveying device for supplying material to said loader;and means for operating said conveying device by the rotation of saidloader.

10. The combination, in a conveyer, of traveling buckets; a rotarybucket-loader; means for rotating said loader to load material into thebuckets; a screw conveyer for supplying material to said loader; andmeans for operating said screw conveyer.

11. The combination, in a conveyer, of travelingbuckets;arotarybucket-loader; ascrew conveyer forsupplying material tosaidloader; and means for operating said screw conveyer by a part of themain conveyer.

12. The combination, in aconveyer, of traveling buckets; a rotarybucket-loader; a screw conveyerforsupplyingmaterial tosaidloader; andmeans for operating said screw conveyer by the rotation ot' said loader.

13. The combination, in a conveyer, of a loading-casing provided with adischargeopening and with side openings; means for operating said casingto load the buckets; and means for supplying material into said sideopenings from each side ofthe conveyer.

14. The combination, in a conveyer, of traveling buckets; abucket-loader; means for operating said loader to load material into thebuckets; conveyingdevices for supplying material to said loader fromeach side of the conveyer; and means for operating said conveyingdevices.

15. The combination, in a conveyer, ot a loader; conveying devices forsupplying material to said loader from each side of the conveyer; andmeans for operating said conveying devices by a part of the mainconveyer.

16. The combination, in a conveyer, of a loader; conveying devices forsupplying material to said loader from each side of the conveyer; andmeans for operating said conveying devices by said loader.

17. The combination, in a conveyer, of a rotary loading-casing providedwith side openings and with a discharge-opening and means for supplyingmaterial into the side openings of said casing from each side of theconveyer.

18. The combination, inaconveyer, of traveling buckets; a rotary loader;means for rotating said loader to load material into the buckets;conveying devices for supplying material to said loader from each sideof the conveyer; and means for operating said conveying devices.

19. The combination, in a conveyer,-of a rotary loader; conveyingdevices for supplying material to said loader from each side of theeonveyer; and means for operating said conveying devices by a part ofthe main conveyer.

20. The combination, in a conveyer, of a rotary loader; conveyingdevices for supplying material to said loader from each side of theconveyer; and means for operating said conveying devices by the rotationoi' said loader.

2l. The combination, in a conveyer, of traveling buckets; abucket-loader; means for operating said loader to load material into thebuckets; screw conveyers for supplying material to said loader from eachside of the conveyer; and means for operating' said screw conveyers.

22. The combination, in a conveyer, of a loader; screw conveyers vforsupplying material to said loader from each side of the conveyer; andmeans for operating said screw conveyers by a part of the main conveyer.

23. The combinatiom'in a conveyer, of a loader; screw conveyers forsupplying material to said loader from each side of the conveyer; andmeans for operating said screw conveyers by said loader.

24. The combination, in a conveyer, of traveling buckets; a rotaryloader; means for rotating said loader to load material into thebuckets; screw conveyers for supplying material to said loader from eachside of the conveyer; and means for operating said screw conveyers.

25. The combination', in a conveyer, otra rotary loader; screw conveyersfor supplying material to said loader'f rom each side of the conveyer;and means for operatingsaid screw conveyers by a part of the mainconveyer.

26. The combination, in a conveyer, ot' a ro- ,tary loader; screwconveyers for supplying material to said loader from each side of theconveyor; and means for operating said screw conveyers bythe rotation ofsaid loader.

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27. The combination, in a conveyer, of endless flexible connections;gravity-buckets suspended between said connections and spaced apart; abucket-loader; means for operating said loader to load material into thebuckets; a conveying device for supplying material to said loader; andmechanism for driving said conveying device.

2S. The combination, in a conveyer, of endless flexible connections;gravity-buckets snspended between said connections and spaced apart; abucket-loader; means for operating said loader to load the buckets; aconveying device for supplying material to said loader; and means foroperating said conveying device by a part of the main conveyer.

29. The combination, in a conveyer, of eudless flexible connections;gravity-buckets pivotally suspended between said connections and spacedapart; a rotary bucket-loader; means for rotating said loader to loadmaterial into the buckets; a conveying device for supplying material tosaid loader; and mechanism for driving` said conveying device.

30. The combination, in a conveyer, of endless lexible connections;gravity-buckets pivotally suspended between said connections and spacedapart; a rotary bucket-loader; means for rotating said loader to loadthe buckets; a conveying device for supplying material to said loader;and means for operating said conveying device by a part of the mainconveyer.

3l. The combination, in a conveyer, of endless flexible connections;gravit y-buckets suspended between said connections; a bucketloader;means for operating said loader to load material into the buckets; ascrew conveyer for supplying material to said loader;

and means for operating said screw conveyer.

32. The combination, in aconveyer, of endless flexible connections;gravity-buckets suspended between said connections; a bucketloader; ascrew conveyer for supplying material to said loader; and means foroperating said screw conveyer by a part of the main conveyer.

33. The combination, in a conveyer, of endless exible connections;gravity-buckets suspended between said connections; a rotary bucketloader; means for operating said loader to load material into thebuckets; a screw conveyer for supplying material to said loader; andmeans for operating said screw conveyer.

34. The combination, in a conveyer, of endless flexible connections;gravity-buckets suspended between said connections; a rotarybucket-loader; a screw conveyer for supplying material to said loader;and means for operating said screw conveyer by a part of the mainconveyer.

85. In a conveyer, the combination of endless flexible connections;gravity-buckets pivotally suspended between said connections;

and two separate loading devices arranged to load separate alternatebuckets ot the conveyer.

3G. In a conveyer, the combination with a series of buckets connectedtogether, of two rotary loading devices arranged to load alternatebuckets of the conveyer.

37. 'In a conveyer the combination with a series of buckets connectedtogether, of a spiral loading apparatus, arranged to load alternatebuckets of the conveyer. Y

3S. In a conveyer, the combination with a series of buckets connectedtogether, of two rotary spiral chutes arranged to load alternate bucketsof the conveyer. v

39. In a conveyer, the combination of' a se'- ries of buckets connectedtogether; two rotary loading devices; and means for rotating saidloading devices by the conveyer to load alternate buckets.

40. In a conveyer, the combination of a series of buckets connectedtogether; a spiral loading apparatus; and means for operating saidloading apparatus by the conveyer to load alternate buckets. y

4l. In a conveyer, the combination of aseries of buckets connectedtogether; two rotary spiral chutes; and means t'or rotating said spiralchutes by the conveyer, to load alternate buckets.

42. In a conveyer, the combination of endless tlexible connections;gravity-buckets pivotally suspended between said connections; means,operated by the conveyer, for loading alternate buckets with material;and means for tilting each alternate bucket upon its pivot anddischarging the contents of the buckets at different points.

43. In a conveyer, the combination of a scries of buckets connectedtogether; a rotary loading apparatus arranged to load alternate bucketswith material; and means forv discharging the contents of alternatebuckets at different points.

44. In a conveyer, the combination of a series of buckets connectedtogether; a rotary loading apparatus arranged to load alternate bucketswith material; means for rotating said loading apparatus by theconveyer; and means for discharging the contents of alternate buckets atdifferent points.

45. In a conveyer, the combination of a series of buckets connectedtogether; a spiral loading apparatus arranged to load alternate bucketswith material; and means for discharging the contents of each bucketalternately at an appropriate point.'

46. In a conveyer the combination of a series of buckets connectedtogether; a spiral loading apparatus arranged to load alternate bucketswith material; means for operating said spiral loading apparatus by theconveyer; and means for discharging the contents of each bucketalternately at an appropriate point.

47. In a conveyer, the combination of endless llexible connections;gravity-buckets piv- IOO IIO

otally suspended between said connections; two separate loading devices;means for operating said loading devices so that each device will loadan alternate bucket; and means for tilting each alternate bucket uponits pivot and discharging the contents of the buckets at dilerentpoints.

48. In a conveyer, the combination of cndless flexible connections;gravity-buckets pivotally suspended between said connections;

two separate loading devices; means for op` erating said loading devicesby the conveyer so that each device will load an alternate bucket; andmeans for tilting each alternate bucket upon its pivot and dischargingthe contents of the buckets at different points.

49. In a conveyer, the combination of a series of buckets connectedtogether; two rotary loading devices; means for rotating said loadingdevices so that each will load an alternate bucket; and means fordischarging the contents of each bucket alternately at an appropriatepoint.

50. In a conveyer, the combination of a series of buckets connectedtogether; two rotary loading devices; means for rotating said loadingdevices by the conveyer, so that each will load an alternate bucket; andmeans for discharging the contents of each bucket alternately at anappropriate point.

5l. In a conveyer, the combination of a series of buckets connectedtogether; two spiral* loading-chutes; means for operating said spiralloaders so that each will load an alter- -nate bucket; and means fordischarging the contents of each bucket alternately at an appropriatepoint.

52. In a conveyer, the combination of a series of buckets connectedtogether; two spiral loadingchutes; means for operating said spiralYloaders by the conveyer, so that each will load an alternate bucket;and means for discharging the contents of each bucket alternately at anappropriate point.

53. The combination, in aconveyer, of traveling buckets; means forloading said buckets; means for discharging said buckets; a rotaryreceiver for receiving the discharged material; and means for Operatingsaid receiver by the conveyer.

54:. The combination, in a conveyer, ot` traveling buckets; means forloading said buckets; means for discharging said buckets; ascrew-conveyer-receivin g the discharged material; and means foroperating said screwconveyer by the main conveyer.

55. The combination, in a conveyer, of travcling buckets; a rotaryloading-casing; means for rotating said casing to load material into thebuckets; means for discharging said buckets; a rotary receiver forreceiving the discharged material; and means for operating saidreceiver. 56. The combination, in a conveyer, of traveling buckets; arotary loading-casing; means for rotating said casing to load thebuckets; means for discharging said buckets; a screw conveyer, receivingthe discharged material; and means for operating said screw conveyer.

57. The combination, in aconveyer, of ilexible connections;gravity-buckets suspended from said connections; means for loadingmaterial directly into said buckets; means for tilting,r said buckets todischarge their contents; a rotary receiver, receiving the dischargedmaterial; and means for operating said receiver. t

5S. The combination, in a conveyer, of ilexible connections;gravity-buckets suspended from said connections; means for loadingmaterial directly into said buckets; means for tilting said buckets todischarge their contents; a screw conveyer receiving the dischargedmaterial; and means for operating said screw conveyer.

59. The combination, in a conveyer, of flexible connections;gravity-buckets suspended from said connections; a rotaryloading-casing; means for rotating said casing to load the buckets;means for tilting the buckets to discharge their contents; a rotaryreceiver for receiving the discharged material; and means for operatingsaid receiver.

60. The combination, in a conveyer, of flexible connections;gravity-buckets suspended from said connections; a rotaryloading-casing; means for rotating said casing to load the buckets;means for tilting the buckets to dis- 'charge their contents; a screwconveyer receiving the discharged material; and means for operating saidscrew conveyer.

6l. The combination, in a conveyer, of traveling buckets; abucket-loader; means for operating said loader to load material into thebuckets a feeding-conveyer for supplying material to the loader; meansfor operating said feeding-conveyer; means for discharging the buckets;a receiving-conveyer; and means for operating said receiving-conveyer.

62. The combination, inaconveyer, of traveling buckets; a'bucket-loader;means for operating said loader to load material into the buckets afeeding screw conveyer for supplying material to the loader; means foroperating said screw conveyer; means for discharging the buckets; areceiving screw conveyer; and means for operating saidreceiving-conveyer.

63. The combination,in a conveyer, of traveling buckets a rotarybucket-loader provided with a single discharge-openingen its periphery;and means for rotating said loader by the conveyer.

64. The combination, in a conveyer, of endless flexible connections;gravity-buckets pivotally suspended between said connections and spacedapart; a rotary bucket-loader provided on its periphery with a singledischargeopening; and means for rotating said loader to load materialinto the buckets.

65. The combination, in a conveyer, of traveling buckets and a rotaryloading chute or casing provided on its periphery with a singledischarge-opening.

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66. The combination in a conveyer, of travelingbuckets and a rotaryloading chute or casing provided with a side opening, for receivingmaterial, and with a single dischargeopening on its periphery.

,67; The combination in a conveyer, of traveling buckets; a loadingchute or casing provided on its periphery with a singledischargeopening; and means for rotating said loading-chute by theconveyer.

68. The combination in a con veyer, of traveling buckets; a loadingchute or casing provided with a side opening for receiving material andwith a single discharge-opening on its periphery; and means for rotatingsaid loading-chute by the conveyer.

69. The combination, in a conveyer, of endless flexible connectionsgravity-buckets pivotally suspended between said connections and spacedapart; a loading chute or casing provided with a side opening, forreceiving material, and with Va single discharge-opening on itsperiphery; and means for rotating said chute to load the buckets.

70. The combination, in a conveyer, of traveling buckets; a rotaryspiral chute or casing having a diametrically increasing spiral; meansfor supplying material into said spiral;

and means for positively rotating said chuteV to load material into thebuckets.

71. The combination, in aconveyer, of traveling buckets; a rotary spiralchute or casing having a diametrically increasing spiral; means forsupplying material into said spiral; and means for positively rotatingsaid chute by the conveyer to load material into the buckets.

72. A loading device for conveyers, consisting of a chute or casingprovided with an internal spiral integral therewith and means forpositively rotating said chute.

73. The combination, in a bucket conveyer, of traveling buckets, and arotary spiral loading-chute having a diametrically-increasing spiral andprovided with teeth or projections for rotating the same.

74. The combination, in a conveyer, of a series of buckets; flexibleconnections between said buckets; and a rotary spiral loadingchute forloading material into said buckets provided with teeth or projectionsfor engaging said flexible connections.

75. The combination, in a conveyer, of endless flexible connections;gravity-buckets pivotally suspended between said connections and spacedapart; and a rotary spiral chute or Y casing for leading material intosaid buckets.

76. The combination, in a conveyer, of endless flexible connections;gravity-buckets pivotally suspended between said connections and spacedapart; a spiral chute or casing for loading material into said buckets;and means for rotating said spiral chute by the conveyer.

77. The combination, in a conveyer, of endless ilexible connections;gravity-buckets pivotally suspended between said connections and spacedapart; a spiral chute or casing for otally suspended between saidconnections g and spaced apart; a spiral loading chute or casing open ateach side and provided with a discharge-opening; means for supplyingmate-rial into each side of said loading-chute;

and means for rotating said chute by the coni",

veyer.

80. A rotary spiral loader provided with an expanding discharge-openingon its periphery.

8l. A bucket-loader consisting of a spiral chute or casing provided witha side opening for receiving material and with an expandingdischarge-opening on its periphery.

82. A bucket-loader consisting of a chute or casing provided with anopening in its side,

Vfor receiving material, and with an expanding discharge-opening on itsperiphery.- Y

83. A bucket-loader consisting of a rotary casing, having an opening ateach side forreceiving material.

IOD

84:. A bucket-loader consisting of a rotary spiral chute, having anopening at each side for receiving material.

85. A bucket-loader consisting of a rotary casing provided with a hollowneck of dieryent diameter from the body of the loader.

86. A-bucket-loader consisting of a rotary casing provided with a hollowneck of different diameter from the body of the loader; and means forsupporting said casing by said neck, y,

87. A bucket-loader consisting of a rotary casing provided with a hollowneck at each side. Y

88. A bucket-loader consisting of a rotary casing provided with a hollowneck at each'i side; and means for supporting said necks.

89. A bucket-loader consisting of a spiral chute or casing provided witha hollow neck of different diameter from the body of the loader.

90. A bucket-loader consisting of a spiral chute or casing provided witha hollow neck of different diameter from the body of the loader, andmeans for supporting said neck.

91. A bucket-loader consisting of a spiral chute or casing provided witha hollow neck at each side.

92. A bucket-loader consisting of a spiral chute or casing provided witha hollow neck at each side; and means for supporting said necks.

93. A bucket-loader consisting of a rotary casing provided with a hollowneck; in combination with a feeding device entering said neck.

94. A bucket-loader consisting of a rotary casing provided with a hollowneck at each side; in combination with feeding devices entering saidnecks.

95. A bucket-loader consisting of a rotary spiral chute or casingprovided with a hollow neck of different diameter from the body of theloader; in combination with a feeding device entering said neck.

96. A bucket-loader consisting of a rotary spiral chute or casingprovided with a hollow neck at each side; in combination with feedingdevices entering said necks.

97. The combination,in abucket conveyer, of a rotary bucket-loaderprovided with a hollow neck of different diameter from the body of theloader, and a roller -bearing for supporting said neck.

98. The combination,inabucket conveyer, of a rotary bucket-loaderprovided with a hollow neck of diiferent diameter from the body of theloader at each side, and roller-bearings for supporting said necks.

99. The combination with a bucket-loader having teeth or projections foroperating the same, of means for throwing one of said projections out ofgear with the operating devices.

100. The combination with a rotary bucketloader having teeth orprojections for rotating the same, of means for throwing one ot saidteeth or projections out of gear with the operating devices.

101. The lcombination in a conveyer of travelingbuckets; flexibleconnections; abucketloader provided with teeth or projections forengaging said connections; and means for throwing one of said teeth orprojections out of gear with said connections.

102. The combination,in a conveyer of travelingbuckets; yliexibleconnections; a rotary .i bucket-loader having teeth or projections forengaging `said connections; and means for throwing said teethorprojections out of gear with said connections. y.

103. The combination of a bucket-loader 5o provided with teeth orprojections, one of said teeth being pivoted; and means for rotating lsaid pivoted tooth and thereby throwing it out of gear with theoperating devices.

104. The combination of a rotary bucketloader having a side pieceprovided with teeth or projections, one of said teeth being pivoted tosaid side piece; and means for rotating said pivoted tooth and therebythrowing it out of gear with the operating devices.

105. In a conveyor, the combination of a series of buckets spaced apart;flexible connections between the buckets; track-wheels; and means forsupporting such flexible connections between the track-wheels, atdesired points in the track.

106. Inaconveyer, the combination of a series of buckets spaced apart;flexible connections between the buckets; track-wheels; and asupporting-guide for said flexible connections between the track-wheels.

107. In a conveyer, the combination of a conveyer-chain; supports forsaid chain; a loading device; and a supporting-guide for holding saidchain to the operating-line of the loading device between thechain-supports.

108. In a conveyer, the 'combination of a conveyer-chain; supports forsaid chain; a loading device; and rails or bars beneath said loadingdevice for supporting said chain between the chain-supports.

109. In a conveyor, the combination of a con veyer-chain; a loadingdevice; and a supporting-guide for said chain consisting of two parallelbars, having a channel between them.

110. In a conveyer, the combination of a conveyer-chain; supports forsaid chains; a loading device provided with teeth or projections forengaging said: chain; and a guide for supporting saidA chainbetween thechainsupports and insuring its engagement by said teeth.

111. In a conveyer, the combination of a convcyer-chain; supports forsaid chain; a rotary loading device provided with teeth or projectionsfor engaging said chain; and a guide for supporting said chain betweenthe chain-supports and insuring its engagement by said teeth.

ARTHUR J. FRITH.

Witnesses:

J onNS. WYTH, H. L. VAN ZILE.

